Home / 1,509.48-2,080.80-1,011.96

Finding the Fourth Proportional to 1,509.48, 2,080.80 and 1,011.96

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Solution

The fourth proportional to 1,509.48, 2,080.80 and 1,011.96 is: 1,394.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,509.48 : 2,080.80 = 1,011.96 : x
  2. Step 2: Convert to fraction form
    1,509.48/2,080.80 = 1,011.96/x
  3. Step 3: Cross multiply
    1,509.48x = 2,080.80 × 1,011.96
  4. Step 4: Simplify right side
    1,509.48x = 2,105,686.37
  5. Step 5: Solve for x
    x = 2,105,686.37/1,509.48
  6. Step 6: Final answer
    x = 1,394.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.